Schema

class geoscript.feature.Schema(name=None, fields=[], ft=None, uri='http://geoscript.org/feature')

Describes the structure of a feature. A schema is composed of a name, and a set of fields each containing a name and a type.

name is a str.

fields is a list of (str, type) tuples.

>>> from geoscript import geom
>>> schema = Schema('widgets', [ ('geom', geom.Point), ('name', str), ('price', float) ])
>>> schema
widgets [geom: Point, name: str, price: float]

name

The name of the schema. A schema name is usually descriptive of the type of feature being described, for example “roads”, “streams”, “persons”, etc...

uri

The namespace uri of the schema. A schema namespace uri qualifies the schema name, usually used for purposes of encoding GML.

geom

The geometry Field of the schema. Returns None in the event the schema does not contain any geometric attributes

field(*args, **kwargs)

Use get().

feature(vals, id=None)

Creates a feature of the schema from a dict of values values.

vals is a dict in which keys are attribute names, and values are attribute values.

id is an optional feature identifier as a str.

>>> s = Schema('widgets', [('name', str), ('price', float) ])
>>> f = s.feature({'name': 'anvil', 'price': 100.0}, '1')
>>> f 
widgets.1 {name: anvil, price: 100.0}